bundles/org.simantics.objmap2/src/org/simantics/objmap/graph/annotations/factories/LinkedListRuleFactory.java

   1 /*******************************************************************************
   2  * Copyright (c) 2019 Association for Decentralized Information Management
   3  * in Industry THTH ry.
   4  * All rights reserved. This program and the accompanying materials
   5  * are made available under the terms of the Eclipse Public License v1.0
   6  * which accompanies this distribution, and is available at
   7  * http://www.eclipse.org/legal/epl-v10.html
   8  *
   9  * Contributors:
  10  *     Semantum oy - initial API and implementation
  11  *******************************************************************************/
  12 package org.simantics.objmap.graph.annotations.factories;
  13
  14 import java.lang.annotation.Annotation;
  15 import java.lang.reflect.Field;
  16 import java.util.Collection;
  17
  18 import org.simantics.db.ReadGraph;
  19 import org.simantics.db.Resource;
  20 import org.simantics.db.exception.ResourceNotFoundException;
  21 import org.simantics.db.exception.ServiceException;
  22 import org.simantics.db.exception.ValidationException;
  23 import org.simantics.objmap.bidirectional.IBidirectionalMappingRule;
  24 import org.simantics.objmap.graph.annotations.LinkedList;
  25 import org.simantics.objmap.graph.rules.MappedElementsRule;
  26 import org.simantics.objmap.graph.rules.domain.LinkedListAccessor;
  27 import org.simantics.objmap.graph.rules.factory.IFieldRuleFactory;
  28 import org.simantics.objmap.graph.rules.range.FieldAccessor;
  29
  30 public class LinkedListRuleFactory<Range> implements IFieldRuleFactory<Resource, Range> {
  31
  32     @Override
  33     public IBidirectionalMappingRule<Resource, Range> create(ReadGraph g, Annotation _annotation, Field field) throws ResourceNotFoundException, ValidationException, ServiceException {
  34         LinkedList annotation = (LinkedList)_annotation;
  35         return new MappedElementsRule<Resource,Range>(
  36                 new LinkedListAccessor(g.getResource(annotation.value()), g.getResource(annotation.type()), annotation.composition()),
  37                 new FieldAccessor<Range,Collection<Range>>(field)
  38             );
  39     }
  40
  41 }